Polar Air PHW Highwall Fan Coil Wall Mounted Indoor Unit - 4-Pipe

Product Overview: At a Glance

The Polar Air PHW Highwall 4-Pipe Fan Coil Unit is a premium wall-mounted hydronic solution designed to deliver simultaneous heating and cooling within a single space. Combining a discreet architectural design with advanced EC motor technology, the PHW Highwall 4-Pipe provides exceptional comfort and energy-efficient performance.

With separate heating and cooling coils, this unit is ideal for buildings with varying thermal demands throughout the year, such as hotels, offices, and any other mixed-use developments.

Key Features & Benefits

• 4-pipe hydronic configuration - enables simultaneous heating and cooling for maximum flexibility and occupant comfort.
• Independent heating and cooling coils - ideal for buildings with variable zone requirements.
• Energy-efficient EC motor - 0-10 VDC EC motor technology delivers reduced energy consumption and improved part-load efficiency (up to 30% energy savings compared to AC motors).
• Quiet operation - engineered for low noise levels with a sound pressure level from 25 dBA, suitable for bedrooms, offices, and noise-sensitive environments.
• Discreet wall-mounted design - slim casing with integrated, non-intrusive LED display (can be switched off).
• High airflow performance - rapid response to space heating and cooling demands.
• Factory-integrated components - pre-installed valves housed within the casing for a clean finish and reduced installation time.

Typical Applications & Use Cases

The PHW Highwall 4-Pipe fan coil unit is specifically suited to buildings that require year-round comfort with simultaneous heating and cooling capability across different zones.

• Hospitality: Hotel bedrooms, reception areas, banquet halls
• Commercial: Offices, banks, call centres, corporate buildings
• Residential: High-end apartments, mixed-use developments
• Education: Universities, colleges, campus buildings, libraries

This configuration is particularly advantageous where solar gain, occupancy, or equipment loads vary significantly between spaces.

Technical Overview

The Polar Air PHW Highwall 4-Pipe is a Eurovent-certified hydronic fan coil, tested under Eurovent standard conditions, and designed for reliable operation in demanding commercial environments. The unit incorporates copper tube coils mechanically expanded into aluminium fins and is rated for operating pressures up to 16 bar. Cooling capacity is up to 3.6 kW and heating capacity is up to 3.3 kW. This model is available in two sizes - 500 and 750. Optional accessories are available.